The Pirates of Penzance, Act II: No. 33, With Cat-Like Tread

Recording identifiers

ISRC

GBF076511660

Release date of the album this recording appears on

2025-06-13

CopyrightID (CopyrightChains transaction hash)

0xc36c4fa56c47ca0052ebe8a75b9f24877903c78b20585bde5dd69be050a485f8

Copyright registration time

2026-08-01T04:10:27+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-08-01T04:52:22Z

Bitcoin block

960513

Canonical record hash

sha256:2d043397afc157eca4742494cb2bab7875e6b4b09e059ef1f6e9578e10e575ed

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF076511660

What this proof establishes

This recording was released in 2025. ProofProfile's artist catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and this recording entered the record through cc-db-prod's ISRC-linked registration. Its provenance rests on the dates stated above rather than on the era of that source corpus.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.